Rotary anvil



ROTARY u -APPL|CATION FILE I NIB.

1,324,492.- Patented 1m; 9,1919.

BY S

A TTORNEYS.

I UNITED sr-ArEs PATENT oFF- oE- IVAN '1. BRANSON, or'sroox'roiv,CALIFORNIA.

To all whom it may concern s, Be .it known that I, vIvan T. BRAnsoN, acitizen of the UnitedStates of Amer1ca,-re

siding at Stockton, in the county of San Joaquin and State ofCalifornia, have invented certain new and useful. Improvements in RotaryAnvils; and I do declare the following to be a clear, full, and exactdescription of the same, reference being had to the accompanyingdrawings, and to the characters of reference marked thereon, which forma part of this application.

This invention relates to improvements in anvils and particularly tothat type used under steam and trip hammers and the like, the principalobject being to produce an anvil which has a plurality of faces, any oneof which may be positioned and held directly under the hammer head.

A further object is to provide the faces of such anvil with recesses ofdifierent sizes and forms, to serve as dies whenever any particularshape is desired in the metal being forged.

In present practice, the anvils have a single flat face and if it isdesired to bend a piece of metal under the hammer or shape it in anyway, blocks of iron are laid on the anvil or a single die having thedesired shape is placed thereon.

When the hammer drops to bend a piece of metal between the blocks, theseblocks fly off the anvil to a considerable distance, and are apt toinjure the workers or cause other damage. In the case of the dies, eachone is temporarily secured to the anvil when wanted, and then taken offagain. This is a process consuming much time and each die form beingseparate, results in their becoming mislaid about the shop.

With my improved anvil, any desired die form may be adjusted under thehammer head with a very few minutes work, and the anvil and dies beingintegral, no parts can fly off or get lost.

A still further object of the invention is to produce a device whichwill be simple and inexpensive and yet one which will be exceedinglyefficient for the purposes for which it is designed.

These objects, I accomplish by means of such structure and relativearrangement of ROTARY AiWILl Specification of Letters Patent.

the parts aswill fully appear by a perusal of the followingspecification. and; claim;

On the drawings, similar characters of reference indicate. correspondingparts in the several, views i Figure 1 is a side elevation of the anvilas-setnp. 5w j I Fig. 2 is an endlelevationof the anvil block removedfrom its bearings.

, Patented Dec. 9, 1919; 7 Application: filed 1111 7 23, 191s; Serial naaiaavo.

F i2. 3 is an enlarged section taken on a line 3-3 of Fig. 1 showing alockingdevice.

Referring now more particularly to the characters of reference on thedrawings, the numeral 1 designates the base or pedestal of the anvilcomposed of two units bolted to the floor, one on either sideof theanvil block 2. 7 This anvil block is formed with a plurality of faces 3,preferably siX, one of which faces is fiat; another has an ovaldepression, as at 4, for the plain bending of metal plates,

bars, etc; another has a plurality of differ-- ent sized square shapeddies, as at 5; and others circular dies, as at 6. V

A shaft 7 projects on either side of the block 2, on the outer ends ofwhich shaft are flanges 8. The anvil block, shaft and flanges arepreferably formed of one piece of metal for the sake of rigidity, but ofcourse could be constructed separately and held firmly together by anysuitable means.

The shaft 7 is rotatably journaled in the recesses 9 when it is desiredto turn the anvil 2. The recesses 9 are so positioned that a pair ofsuch recesses will always be in position to engage with the blocks 10when the anvil is turned to present another face to the hammer. I

If desired, a similar faced block may be mounted to the hammer head,each face registering with the corresponding face on the anvil block.This device of course is adapted to be used with drop hammers, triphammers or may be used as a plain anvil.

All parts thereof are of course so proportioned and positioned topresent a rigid surface to the blow of the hammer and be asvibrationless as it is possible to make the same. 7 7

From the foregoing description it will readily be seen that I haveproduced such a device as substantially fulfils the objects of theinvention as set forth herein.

While this specification sets forth in detail the present and preferredconstruction of the device, still in practice, such devia tions fromsuch detail may be resorted to as do not form a departure from thespirit of the invention, as defined by the appended c aim.

Having thus described my invention, What I claim as new and useful anddesire to secure by Letters Patent is A rotary anvil comprising a base,an

anvil block having a plurality of faces, a

shaft on the block journaled in the base, flanges on the outer end ofthe shaft, a plurality of notches in the periphery of the flanges, andlocking blocks pivotally mounted to the base and adapted at one end toengage with the notches whereby the shaft and anvil block thereon areheld in a pre determined position. a

In testimony whereof I afliX my signature in presence of two Witnesses.

IVAN T. BRANSON.

lVitnesses VERADIN WARNER, BERNARD PRIVAT.

